Stop-motion device.



No. 756,303. PATENTED APR. 5, 1904.,

.' S. W. WARDWELL.

STOP MOTION DEVICE.

mrmouzon FILED 0OT.13, 1902.

[no 110mm.

WITNESSES INVEN 70B UNTTED STATES Patented April 5, 1904'.

PATENT OFFICE.

SIMON W. VVARDWELL, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO UNIVERSALWINDING COMPANY, OF PORTLAND, MAINE, A CORPORA- TION OF MAINE.

STOP-MOTION DEVICE.

SPECIFICATION forming part of Letters Patent No. 756,303, dated April 5,1904.

Appli ation fil d October 13, 1902. Serial No. 127,167. (No model.)

To all whom, it may concern.-

Be it known that I, SIMON W. WARDWELL, residing at Providence, county ofProvidence, and State of Rhode Island, have invented new and usefulImprovements in Stop-Motion Devices, of which the following is aspecification.

My invention relates to stop-motion mechanism for machines for windingthread, cord, yarn, &c., and is especially adapted for use with heavymaterials.

The object of my improvement is to provide a device which shall bepositive in its action and of a structure able to resist the strain andwear incident to winding heavy materials.

The following isa complete specification of my invention illustrated bythe accompanying drawings, in which Figure l is afront elevation of themechanism; Fig. 2, an end elevation; Fig. 3, an illustration of themanner of connecting the device with a winding-machine; Fig. A, a detailof the controlling mechanism.

Referring to the drawings. a is a frame or support for the device,having bearings b b for a horizontal guide-roll 0, over which the cordsfrom the supply are led. At the rear of the guide-roll is a series ofvertical guides d d, &c., in this instance nine being shown to adapt thedevice for eight strands, each strand running between two guides. Theguides at (Z, &c., consist of rolls mounted on spindles e e, &c., whichproject above the rolls to direct the cords between them. A series ofdropbars f f, &c. are provided, one for each strand, supported at thefront of the frame a. here shown, the frame (6 is formed with twooverhanging ledges g and it, one above the other and each provided witha suflicient number of slots c' a, &c., to receive the drop-bars Toretain the bars in their slots, two rods j and 7c extend across thefront of the latter, being held in lugs projecting from either end ofthe ledges g and h. The lower rod 1 is removable from its bearings andhas formed at one end a ring or handle for facilitating said removal.The drop-bars ff are formed at their upper ends with hooksZ Z. &c., toengage the strands leading over the roll 0. The

top of each drop-bar is formed much like the point of a crochet-needle,with its sides so inclined that each cord readily finds its way to itshook, and the latter is formed with a curved face and rounded edges toprevent abrasion of the material. The hooks further serve to limit thedownward movement of the bars by engaging with the ledge g. At the lowerend of each bar are projections or lugs m, adapted to engage the ledge72, to limit the upward movement of the bar.

The frame a is adapted to be supported at the appropriate height on astandard at, and to the latter I have shown attached the devices forengaging the stopping mechanism of the associated machine. These consistof a tripping-lever 0, pivoted to the side of the standard n, and a bailp, engaging said lever and actuated by the drop-bars. The bail p ispreferably formed of wire hinged by its ends engaging holes in the legsof the standard a. The outer bar of the bail extends below the drop-barsand projects in a loop over the top of the lever 0.

In operative connection with the device I have preferred to show thestopping mechanism of a winding-machine such as is described andillustrated in my Patent No. 670,122, granted March 19, 1901, the samebeing particularly adapted for heavy materials. The operation of themachine-is controlled through a sliding rod 21 and a lever E engaging acatch 43, which parts are illustrated in the accompanying drawings byFigs. 3 and 4. Fastened on the rod 21 is shown a lever q, connected tothe lever 0 by the rod r. The rod 1" is formed with an eye at the lowerend, through which a stud extends into the tripping-lever 0. Theopposite end is threaded and passes through an eyebolt in the lever g.Suitable check-nuts engage the threaded end of the rod and are screwedagainst the eyebolt. By adjusting said nuts the relation of the lever qto the le ver 0 may be varied to regulate their conjunctive action. InFig. 4 I have shown the manner of engagement of the catch 43 with thedetent on the lever E.

The operation of the device is as follows:

Any number of strands up to eight may be applied to the device, and eachone is led from the supply between the guides d d, &c., and over theroll 0. Thence it is passed under the hook on the appropriate drop-barand led to the winding-machine. The tension on the cords maintains thedrop-bars in their upper position out of engagement with the bail 0.When a less number of strands than the number of drop-bars provided isused, such of the bars as are not required are supported out ofoperative position by removing the rod is, tilting the bar out from itslower guiding-slot, then lifting it until the lugs rest on the ledge it.When an end breaks or is exhausted, the release of tension allows thebar supported by that particular end to drop. The weight of the bar issuflicient to actuate the lever 0, moving it downward through pressureon the bail I 9. Through the rod 1' and the lever q the rod 21 is rockedin the direction indicated by the arrow in Fig. 3 to release the detenton the lever E from the catch 43. The releasing of the detent permitsthe rod 21, acted upon by a spring or other suitable means, to beshifted longitudinally .in its bearings, and the longitudinal movementof the rod causes the arrestment of the machine by shifting itsdrivingbelt or by other similar operation.

The stop-motion above described is peculiarly adapted for use with heavymaterials, the action of its members and their connections being simpleand direct, devoid of complication, and the relation of the variousmembers being such as to permit them to be sufficiently strong and rigidto withstand the strain and shock inevitably incident to winding andotherwise operating upon heavym'aterials.

Most stop-motion mechanisms depend for their operative efficiency uponthe cooperation of some moving portion or member of the machine, whichis caused by the stop-motion to act to stop' the machine. In my improvedstructure the falling drop-bar acts directly upon the stopping devicesof the machine, the

force of the impact of the drop-bar being sufficient to effect theaction of the stopping devices. My device possesses the furtheradvantage that as its action is practiallyindependent of the machinewith which it is used it may be located at almost any point relative toand distant from the machine.

Without limiting myself to the precise form and arrangement of structureherein shown and described, I claim as my invention l. The combinationwith the frame at having ledges g and h, of drop-bars f f sliding inguideways in the ledges, a rod j fixedly supported at the front of theledge g, a second rod k supported at the front of the ledge it andmounted to secure the drop-bars in either operative or non-operativeposition, substantially as and for the purpose described.

2. The combination with the frame a having ledges g and it, of drop-barsf f sliding in guideways in the ledges, a rod fixedly supported at thefront of the ledge g, a second rod k supported at the front of the ledgeh to secure the drop-bars in either operative or non-operative position,and removable to permit the bars to be shifted into either operative ornon-operative position, and projections on the bars to engage the ledgesand limit the movement of the bars, substantially as and for the purposedescribed.

3. The combination in a stop-motion device with a horizontal guide-roll,vertical guiderolls, spindles extending above the latter on which saidguide-rolls rotate, a bracket supporting the rolls and havingledges withguideslots, a plurality of drop-bars engaging the slots and meansactuated directly by the gravity of the bars to effect the stopping ofthe machine.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

SIMON W. WARDWELL. [L. s.]

Witnesses:

CHARLES A. EDDY, ARTHUR A. ARMINGTON.

